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351

Q:

पानी से निकलने पर सेविंग ब्रश के बाल आपस में चिपक जाते हैं, इसका कारण हैं ?

  • 1
    घर्षण
  • 2
    पृष्ठ तनाव
  • 3
    प्रत्यास्थता
  • 4
    श्यानता
  • Show Answer
  • Workspace

Answer : 2. "पृष्ठ तनाव"
Explanation :

When the brush is taken out of water, the hairs cling together due to surface tension. This happens because the free surface of water tries to acquire a minimum surface area. 

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